<template>
   <view class="goods-item">
        <!-- 商品左侧图片区域 -->
        <view class="goods-item-left">
            <!-- 存储在购物车中的商品，包含 goods_state 属性，表示商品的勾选状态 -->
            <radio :checked="goods.goods_state" color="#C00000" v-if="showRadio" @click="radioClickHandler"></radio>
                <image :src="goods.goods_small_logo" class="goods-pic" v-if="goods.goods_small_logo"></image>
                <view class="cm-spinner" v-else></view>
        </view>
        <!-- 商品右侧信息区域 -->
        <view class="goods-item-right">
            <!-- 商品标题 -->
            <view class="goods-name">{{goods.goods_name}}</view>
            <view class="goods-info-box">
                <!-- 商品价格 -->
                <view class="goods-price">￥{{goods.goods_price | tofixed}}</view>
                <!-- 商品数量 -->
                <uni-number-box :min="1" :value="goods.goods_count" @change="numChangeHandler" v-if="showNum"></uni-number-box>
            </view>
        </view>
    </view>
</template>

<script>
   export default {
    // 定义 props 属性，用来接收外界传递到当前组件的数据
      props: {
        // 商品的信息对象
        goods: {
            type: Object,
            defaul: {},
        },
        showRadio:{
            type: Boolean,
            defaul: false,
        },
        showNum: {
            type: Boolean,
            default: false,
        },
    
      },
      filters:{
         // 把数字处理为带两位小数点的数字
         tofixed(num) {
            return Number(num).toFixed(2)
         }
      },
      data() {
         return {
         };
      },
      onLoad() {

      },
      methods: {
        // radio 组件的点击事件处理函数
        radioClickHandler() {
            // 通过 this.$emit() 触发外界通过 @ 绑定的 radio-change 事件，
            // 同时把商品的 Id 和 勾选状态 作为参数传递给 radio-change 事件处理函数
            this.$emit('radio-change', {
                // 商品的 Id
                goods_id: this.goods.goods_id,
                // 商品最新的勾选状态
                goods_state: !this.goods.goods_state
            })
        },
        // NumberBox 组件的 change 事件处理函数
        numChangeHandler(val) {
            // 通过 this.$emit() 触发外界通过 @ 绑定的 num-change 事件
            this.$emit('num-change', {
                // 商品的 Id
                goods_id: this.goods.goods_id,
                // 商品的最新数量
                goods_count: +val
            })
        }
      }
   };
</script>

<style scoped lang='scss'>
    .goods-item {
        // 让 goods-item 项占满整个屏幕的宽度
        width: 750rpx;
        // 设置盒模型为 border-box
        box-sizing: border-box;
        display: flex;
        padding: 10px 5px;
        border-bottom: 1px solid #f0f0f0;
        .goods-item-left {
            margin-right: 5px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            .goods-pic {
                width: 100px;
                height: 100px;
                display: block;
            }
        }
        .goods-item-right {
            display: flex;
            flex: 1;
            flex-direction: column;
            justify-content: space-between;
            .goods-name {
                font-size: 13px;
            }
            .goods-price { 
                font-size: 16px;
                color: #c00000;
            }
            .goods-info-box {
                display: flex;
                align-items: center;
                justify-content: space-between;
            }

        }
    }
.cm-spinner {
  width: 100px;
  height: 100px;
  border: 3px solid transparent;
  border-radius: 50%;
  border-top: 4px solid #f15e41;
  -webkit-animation: spin 4s linear infinite;
  animation: spin 4s linear infinite;
  position: relative;
}

.cm-spinner::before,
.cm-spinner::after {
  content: "";
  position: absolute;
  top: 6px;
  bottom: 6px;
  left: 6px;
  right: 6px;
  border-radius: 50%;
  border: 4px solid transparent;
}

.cm-spinner::before {
  border-top-color: #bad375;
  -webkit-animation: 3s spin linear infinite;
  animation: 3s spin linear infinite;
}

.cm-spinner::after {
  border-top-color: #26a9e0;
  -webkit-animation: spin 1.5s linear infinite;
  animation: spin 1.5s linear infinite;
}   
             
@-webkit-keyframes spin {
    from {
        -webkit-transform: rotate(0deg);
         transform: rotate(0deg);
    }
    to {
        -webkit-transform: rotate(360deg);
        transform: rotate(360deg);
    }
}   
        
@keyframes spin {
    from {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }
    to {
        -webkit-transform: rotate(360deg);
        transform: rotate(360deg);
    }
}

</style>